Class A7 refers to primary aluminium of commercial purity and is in the form of ingots. To meet the requirements of this brand, set GOST 11069-2001. The proportion of aluminium in the chemical composition of the ingots shall not be less than 99.70%, respectively, and the proportion of impurities shall not exceed a total of 0.30%. If this metal is used for the manufacture of food dishes, the arsenic content must not exceed 0.015% by weight. Aluminium A7 corresponds to the EN AW-1070A mark European standard EN 573-3-94 and 1070 mark, 1070A American Aluminium Association. Primary aluminium is produced by electrolysis. The original raw material used for its production is bauxite and nepheline ore. LC payment 100% confirmed, irrevocable, transferable 5,000 MT available and French Mersin / Turquie zone LOI + BCL or IPCO + BCL for response.
